OvmfPkg: Move SEC/PEI Temporary RAM from 0x70000 to 0x810000

[mirror_edk2.git] / OvmfPkg / Sec / Ia32 / SecEntry.asm

      TITLE   SecEntry.asm\r
;------------------------------------------------------------------------------\r
;*\r
;*   Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>\r
;*   This program and the accompanying materials\r
;*   are licensed and made available under the terms and conditions of the BSD License\r
;*   which accompanies this distribution.  The full text of the license may be found at\r
;*   http://opensource.org/licenses/bsd-license.php\r
;*\r
;*   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
;*   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
;*\r
;*    CpuAsm.asm\r
;*\r
;*   Abstract:\r
;*\r
;------------------------------------------------------------------------------\r
\r
#include <Base.h>\r
\r
    .686\r
    .model  flat,C\r
    .code\r
\r
EXTERN SecCoreStartupWithStack:PROC\r
\r
;\r
; SecCore Entry Point\r
;\r
; Processor is in flat protected mode\r
;\r
; @param[in]  EAX   Initial value of the EAX register (BIST: Built-in Self Test)\r
; @param[in]  DI    'BP': boot-strap processor, or 'AP': application processor\r
; @param[in]  EBP   Pointer to the start of the Boot Firmware Volume\r
;\r
; @return     None  This routine does not return\r
;\r
_ModuleEntryPoint PROC PUBLIC\r
\r
    ;\r
    ; Load temporary RAM stack based on PCDs\r
    ;\r
    SEC_TOP_OF_STACK EQU (FixedPcdGet32 (PcdOvmfSecPeiTempRamBase) + \\r
                          FixedPcdGet32 (PcdOvmfSecPeiTempRamSize))\r
    mov     eax, SEC_TOP_OF_STACK\r
    mov     esp, eax\r
    nop\r
\r
    ;\r
    ; Setup parameters and call SecCoreStartupWithStack\r
    ;   [esp]   return address for call\r
    ;   [esp+4] BootFirmwareVolumePtr\r
    ;   [esp+8] TopOfCurrentStack\r
    ;\r
    push    eax\r
    push    ebp\r
    call    SecCoreStartupWithStack\r
\r
_ModuleEntryPoint ENDP\r
\r
END\r